Crunchy...could try running them through a bitcrusher.

Ringing...could try some creative EQing and a touch of reverb or delay.

Or, use better samples. ;)

(There's lots of things which will work up there in place of high hats...anvils, tambourines, shakers, bells, water chimes, high pitched sine stabs, white noise....in fact, you could try mixing in a quiet anvil with the hat, as not much rings more than anvils.)